<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      .header {
        display: flex;
        justify-content: space-between;
        max-width: 1200px;
        min-width: 367px;
        height: 100px;
        background-color: pink;
        margin: 0 auto;
      }

      .header .logo {
        width: 100px;
        background-color: palevioletred;
      }
      .header .nav {
        flex-grow: 1;
        background-color: paleturquoise;
      }

      .header .user {
        width: 100px;
        background-color: palegreen;
      }
    </style>
  </head>
  <body>
    <div class="header">
      <div class="logo"></div>
      <div class="nav"></div>
      <div class="user"></div>
    </div>
  </body>
</html>
